Yes you can. The easiest way is to look under the tail and see if it has both an anus and a vagina, if it has both it's a girl (Filly), if it has just and anus, it's a boy (Colt).
Immediately after birth.
A male foal is a colt. A female foal is a filly.
It is. How long a mare carries a foal has more to do with her that the sex of the foal.
Amnocentisis or an ouiji board
A baby pony of either sex is called a foal. A male foal is called a colt and a female foal is called a filly. These are the same terms used to describe young horses,
A baby horse in general is called a "foal". A male foal is called a "colt", and a female foal is called a "filly". Jerome for babby horses and Gerald for adult horses
You find it in Dr.Zig's Equestrian Centre form. Make sure you read all of it before attempting the games with your foal.
From your vet.
If you have a computer and printer you can go online and print as many foal pictures as you like. The library will also be a great place to find books about horses.
What you have to do is find the castle then the Queen will ask you if you've lost a foal. The foal that she found isn't your but on one of the hills you can see your foal eating a bunch of flowers. I can't tell you where the hill is. You will have to figure that out for yourself
There are different names for young horses until they reach adulthood. A foal is a baby horse of either sex. A colt is a young male, filly is a young female. While a foal is nursing from the mare he/she is called a suckling. After the mare and foal are separated for weaning the foal is called a weanling. At his/her first birthday they are called a yearling.
Ask for an ultrasound and then click on information. it is all there.
A foal is a baby horse of any gender, while a colt is specifically a male horse under 4 years old. A colt is a male foal under 4 years old (after a year they can be classed as a yearling) but there is no real difference, if you're talking about a male foal you could just call it a colt or a foal. No difference.